hw problem. Any help is greatly appreciated

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mar1
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hw problem. Any help is greatly appreciated

Post by mar1 » Tue Aug 25, 2009 3:00 am

Can someone help me with this hw problem?

If Chargaff determined that the DNA of an organism had 20% G nucleotides, what would he predict about the composition of C, A, and T nucleotides? Explain how you figured this out.

I know that the actual test he concluded that guanine was approx. equal to cytosine and the same with adenine and thynine... the first thing that i thought was ,"would it be G 20% and C 80%" but it doesn't make sense to me.

Any help is greatly appreciated.

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dipjyoti
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Post by dipjyoti » Tue Aug 25, 2009 8:53 am

Search on google, if don't find then ask.
We do not answer home work question.

Thanks.

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canalon
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Post by canalon » Tue Aug 25, 2009 12:43 pm

Or more nicely the problem has all to do with how the base are associated in DNA.

If you think how it happens, you will realize that knowing the proportion of one of the base, allow you to calculate the proportion of the complementary base X=Y and the proportions of the other 2 Z=W= (100%-(X+Y))/2
Patrick

Science has proof without any certainty. Creationists have certainty without
any proof. (Ashley Montague)

mar1
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Re: hw problem. Any help is greatly appreciated

Post by mar1 » Wed Aug 26, 2009 10:43 pm

thanks for the help, that makes sense.

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